Hi, I installed the mni_autoreg and when I run mritotal <input> <output.xfm> my Linux Red Hat 9 freezes. I tried to use the options "-verbose" and also "-debug" to see messages, but the mritotal didn't wrote any output, just freeze. The others tools such as mritoself is working perfect. Does anyone have any idea? Thanks. -- Andre Matos amatos@mrs.mni.mcgill.ca